Nippon Steel Corporation

Tnk Sanwa Precision Co., Ltd.

Hidehiko Sumitomo

Masanori Ueda

Kenzo Iwayama

Mikio Yamanaka

Toshiyuki Suehiro

Keiichi Ohmura

Fumio Fudanoki

Masuhiro Fukaya

Tsunehiro Shimizu

Masayuki Abe

Kenichi Miyazawa

Shigeru Ogawa

Yuichi Kato

Osamu Tanaka

Shinichi Teraoka

Toshiaki Mizoguchi

Hirofumi Yoshimura

Kunihide Takashima

Masayuki Kasuya

Jun Nakatsuka

Isao Iwanaga

Shigeru Minamino

Jiro Tominaga

Wataru Murata

Hitoshi Ota

Takanori Nakazawa

Jun Nakatuka

Jun Araki

Akira Amemura

Yoshiaki Kanai

Highly heat-resistant metallic carrier for an automobile catalyst

High-strength stainless steel foil for corrugating and process for

A method of producing permalloy cores comprising the steps of coating at least one surface of permalloy strip with a slurry consisting of water containing 1 to 5 percent by weight of magnesium hydroxide (Mg(OH).sub.2) powder and the addition of one or more selected from a binder, a thickening agent and a defoaming agent and drying said coating, slitting the permalloy strip thus covered with a coating that when dry is 0.1 to 50 .mu.m thick, more preferably 0.5 to 10 .mu.m thick, and contains not less than 50 percent by weight Mg(OH).sub.2, and more preferably not less than 80 percent by weight Mg(OH).sub.2, as the main constituent, to a final width, or first to an intermediate width if necessary, winding or punching the final width strip to obtain wound or laminated punched cores, and subjecting the core materials to magnetization annealing.

Method of producing permalloy cores

Process for preparing rollable metal sheet from quenched solidified thin

A method of producing Fe-Ni system high permeability alloy comprising the steps of obtaining cast steel sheet 0.3 to 7 mm thick by direct casting of a steel melt containing 35 to 85% by weight of nickel with the balance of iron and unavoidable impurities, forcibly cooling the sheet from solidification to 1200.degree. C. at a cooling rate of at least 75.degree. C./s, and cold-rolling the sheet at a reduction ratio of at least 20%.

Method of manufacturing high permeability Fe-Ni system alloy

Disclosed is a process for the producing coldrolled strips and sheets of austenitic stainless steel, which comprises preparing a cast strip having a thickness not larger than 10 mm, which is composed of an austenitic stainless steel, by a continuous casting machine, in which the wall surface of a casting mold moves synchronously with the cast strip, and cold rolling the cast strip by a hard rolls having a surface hardness not lower than the Vickers hardness of 600. A preferred embodiment of the present invention is characterized in that crystal grains of the cast strip are made finer by cooling the cast strip at a cooling rate of at least 50.degree. C./sec in the temperature range of from the temperature for initiation of solidification of the cast strip to 1200.degree. C. and the cast strip is then coldrolled by the hard rolls, another preferred embodiment of the present invention is characterized in that the hard rolls are composed of a material having a Young's modulus of at least 30000 kgf/mm.sup.2 and the cast strip is cold-rolled by such hard rolls, and another preferred embodiment of the present invention is characterized in that for cast strip which is descaled by pickling, especially with nitric and fluoric acid, prior to cold rolling, the cast strip is cooled at a cooling rate of at least 10.degree. C./sec in the Cr carbide-precipitating temperature range of from 900.degree. to 550.degree. C.

Process for producing cold-rolled strips and sheets of austenitic

Process for production of Cr-Ni type stainless steel sheet having

A non-magnetic cold-deformed stainless steel usable for electronic equipment parts has a Vickers hardness number after cold forming of not less than 400 and a magnetic permeability of not more than 1.01. The steel has excellent hot workability and is mainly used for components such as shafts and pins of VTRs and VTR cassette tapes.

Non-magnetic high hardness austenitic stainless steel

An austenitic stainless steel of a specific composition is cast into a slab and subjected to hot rolling, descaling, cold rolling without a step of preliminary annealing, and annealing. The steel sheet or strip thus obtained is of excellent quality with a satisfactorily low degree of anisotropy.

Process for producing an austenitic stainless steel sheet or strip

Growing community of inventors

Hikari, Japan

Hidehiko Sumitomo